A shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties and a preparation method thereof

Abstract

The present invention belongs to the field of material science and textile technology, and relates to a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties and a preparation method thereof. The shoe fabric has a double-layer structure, the outer layer is an anti-light aging quick-drying layer made of anti-ultraviolet and anti-yellowing polyester yarn, and the inner layer is an antibacterial moisture-conducting layer made of antibacterial nylon 6 yarn. The preparation method is to prepare anti-ultraviolet and anti-yellowing polyester fibers and modified nylon 6 fibers respectively, perform alkali etching on the modified nylon 6 fibers to obtain antibacterial nylon 6 fibers, spin the anti-ultraviolet and anti-yellowing polyester fibers into anti-ultraviolet and anti-yellowing polyester yarns, spin the antibacterial nylon 6 fibers into antibacterial nylon 6 yarns, use the anti-ultraviolet and anti-yellowing polyester yarns as outer yarns and the antibacterial nylon 6 yarns as inner yarns in a knitting manner to weave the shoe fabric with breathable, antibacterial, moisture-absorbing, quick-drying and anti-light aging properties, which can significantly improve the wearing experience.

Description

Technical Field

[0001] The invention belongs to the field of material science and textile technology, and relates to a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties and a preparation method thereof. Background Art

[0002] As people's living standards improve, the requirements for comfort and health of shoe materials are also increasing. If the sweat produced by the feet cannot be discharged from the inside of the shoe to the outside, the inside of the shoe will not dry for a long time, affecting the foot feel, causing discomfort to the user, and it is easy to breed bacteria, causing bacterial infection of the foot skin, affecting the health of the user. Therefore, it is of great significance to study new shoe fabrics and their preparation methods.

[0003] The existing shoe fabric manufacturing method mainly designs a multi-layer structure, and uses fabrics with different properties to construct waterproof layers, moisture-absorbing layers, breathable layers, etc. with different functions, and then combines these multiple layers together to build a shoe body, such as a breathable and quick-drying upper disclosed in patent CN221179537U, and a waterproof and heat-dissipating upper fabric disclosed in patent CN217803759U; while using a multi-layer structure, it is also a common method to use the special cross-sectional structure of special-shaped fibers to improve the moisture absorption and quick-drying performance, such as a one-way moisture-conducting waterproof shoe material and its preparation method disclosed in patent application CN114990776A; and while using a multi-layer structure, the fabric layer is supported by a mesh-like empty circle layer in the line to form a line cavity for subsequent internal and external air exchange to discharge the humid and hot gas in the shoe, such as a moisture-conducting and quick-drying knitted upper disclosed in patent application CN117243445A. However, the moisture-absorbing and quick-drying upper designed by the multi-layer structure is necessarily relatively thick, and there will be a problem of poor air permeability, which will affect the moisture absorption and quick-drying performance of the shoe.

[0004] The prior art also has a method of combining special weaving methods such as flying weaving with heterogeneous fibers to further improve the moisture absorption and quick-drying performance of the upper. For example, patent CN220477037U discloses a moisture-wicking flying weaving upper. Although the use of a special weaving method can be used to design the upper to have more air holes and improve air permeability, the process will be complicated and the weaving difficulty will be increased.

[0005] In addition, the existing technology also achieves the effect of absorption and discharge by deforming the upper, which requires the upper material to have a certain deformation ability. If the upper does not deform, air exchange and moisture removal cannot be carried out, which has limitations in application.

[0006] In summary, the functions of current shoe fabrics are relatively single, and there is an urgent need to develop a new breathable, antibacterial, moisture-absorbing and quick-drying shoe fabric. Summary of the invention

[0007] The purpose of the present invention is to solve the problems existing in the prior art and to provide a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties and a preparation method thereof.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] A shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, having a double-layer structure, an outer layer being an anti-light-aging quick-drying layer made of anti-ultraviolet and anti-yellowing polyester yarn, and an inner layer being an antibacterial moisture-conducting layer made of antibacterial nylon 6 yarn;

[0010] The anti-ultraviolet and anti-yellowing polyester yarn is spun from the anti-ultraviolet and anti-yellowing polyester fiber, and the antibacterial nylon 6 yarn is spun from the antibacterial nylon 6 fiber;

[0011] The monofilament of the anti-UV and anti-yellowing polyester fiber contains titanium dioxide, which is not exposed and protrudes from the surface of the monofilament, giving the monofilament a convex rough surface with one protrusion every 0.5~2μm; the monofilament of the antibacterial nylon 6 fiber contains zinc oxide, which is exposed and protrudes from the surface of the monofilament, giving the monofilament a convex rough surface with one protrusion every 0.5~2μm.

[0012] The principle of the present invention is as follows: the fiber surfaces of the inner layer and the outer layer have a large number of protrusions, and a large number of grooves are formed between the protrusions on the same fiber surface, which is conducive to the rapid spreading of water on the fiber surface. A large number of capillary-like channels are formed between the protrusions of different fibers, which is conducive to the rapid conduction of water. The grooves and capillary-like channels greatly enhance the capillary effect of the fabric, which is conducive to the rapid discharge of moisture in the shoe through the fabric layer to the outside. Figure 1 The curved arrow shown indicates that the fabric is quick-drying, and the moisture can quickly enter the environment from the surface of the fabric, keeping the inside of the shoe dry and achieving the functions of breathability, moisture conduction and quick drying; the inner layer of nylon 6 fiber contains amide bonds and has good moisture absorption properties; the zinc oxide particles exposed on the surface of the inner layer of nylon 6 fiber fully exert the antibacterial function, reduce the growth of bacteria in the shoe, and achieve the antibacterial function; the outer layer of polyester fiber has titanium dioxide particles inside and on the surface of the polyester fiber. These titanium dioxide particles have a strong scattering ability for light, especially the titanium dioxide particles on the surface of the polyester fiber increase the effective area for light, thereby achieving excellent anti-light aging effect and preventing the upper material from turning yellow due to light aging.

[0013] As the preferred technical solution:

[0014] As described above, the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, the specifications of the anti-ultraviolet and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber are 150~300D / 96~288F and 20~150D / 36~288F respectively, the linear density of the anti-ultraviolet and anti-yellowing polyester yarn is 1.04~2.08dtex, the linear density of the antibacterial nylon 6 yarn is 0.52~1.04dtex, the outer layer is a plain woven structure, and the inner layer is a double rib structure.

[0015] The shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties as described above has a breathability index greater than 2000 mm / s and a moisture permeability index greater than 3000 g / m 2 / 24h, the antibacterial rate against Candida albicans is greater than 99%, the water absorption rate is ≥150%, the water droplet diffusion time is ≤2s, the wicking height is ≥110mm, the drying rate is ≥0.4g / h, and the yellowing resistance grade is ≥4.

[0016] The present invention also provides a method for preparing a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties as described in any of the above items, respectively preparing an anti-ultraviolet and anti-yellowing polyester fiber and a modified nylon 6 fiber, subjecting the modified nylon 6 fiber to an alkali etching treatment (the purpose is to remove the oligomers covering the protruding part of the modified functional particles on the fiber surface, so that the functional particles are exposed, but the oligomers embedded in the fiber are not affected by being embedded in the nylon 6 matrix of the fiber, so that the functional particles will not fall off the fiber surface, thereby exerting the antibacterial function of the functional particles and reducing the growth of bacteria in the shoe) to obtain the antibacterial nylon 6 fiber, spinning the anti-ultraviolet and anti-yellowing polyester fiber into an anti-ultraviolet and anti-yellowing polyester yarn, spinning the antibacterial nylon 6 fiber into an antibacterial nylon 6 yarn, using the anti-ultraviolet and anti-yellowing polyester yarn as the outer yarn and the antibacterial nylon 6 yarn as the inner yarn in a knitting manner to obtain a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties;

[0017] The preparation process of the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber is as follows: spinning a spinning melt containing 8-15wt% of coated modified functional particles, and performing a draft of 5.6-6.5 times during the spinning process; the D50 particle size (i.e., median diameter or median particle size) of the coated modified functional particles is 50-300nm; the coated modified functional particles include functional particles and oligomers coated on the surface thereof by covalent bonds, and the oligomers and the matrix of the spinning melt are different only in average polymerization degree; a large number of protrusions can be formed on the surface of the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber by controlling the particle size of the coated modified functional particles, the content of the coated modified functional particles in the spinning melt, and the drafting multiple;

[0018] The functional particles corresponding to the anti-ultraviolet and anti-yellowing polyester fibers are titanium dioxide, the matrix of the spinning melt is polyester, and the average degree of polymerization of the oligomers is 40-60; the functional particles corresponding to the modified nylon 6 fibers are zinc oxide, the matrix of the spinning melt is nylon 6, and the average degree of polymerization of the oligomers is 20-30;

[0019] The preparation process of the spinning melt corresponding to the modified nylon 6 fiber is as follows: first, nylon 6 and the coated modified functional particles are melt-blended to obtain a masterbatch, the masterbatch is solid-phase thickened, and then the masterbatch after solid-phase thickening is melt-blended with nylon 6 to obtain a spinning melt. During the solid-phase thickening process, the oligomer coated on the surface of zinc oxide reacts with nylon 6, thereby improving the bonding strength between zinc oxide and the fiber body in the subsequently prepared modified nylon 6 fiber, and avoiding the shedding of zinc oxide during the alkali etching process.

[0020] As the preferred technical solution:

[0021] In the method described above, the process of alkali etching treatment is as follows: placing the modified nylon 6 fiber in an alkali solution, heating it to 130°C at a heating rate of 2°C / min in an infrared dyeing machine, keeping it warm for 40 minutes, and then performing post-treatment (washing, drying, and drying at 105°C for 2 hours), wherein the ratio of the modified nylon 6 fiber to the alkali solution is 1g:50mL, the alkali solution is composed of NaOH, benzyl alcohol and water, the concentration of NaOH is 6g / L, and the concentration of benzyl alcohol is 3mL / L.

[0022] As described above, the weaving process is: first, the outer layer of fabric is woven on a loom using anti-ultraviolet and anti-yellowing polyester yarn, and then, on the basis of the outer layer of fabric, the inner layer of fabric is woven using antibacterial nylon 6 yarn, and at the same time, the two layers of fabric are tightly combined together using a knitting method, and then pre-shaped, double-sided singeing, washed and dried, shaped, and post-treated are performed in sequence.

[0023] In the method described above, the pre-setting temperature is 120-150°C; the setting temperature is 135-165°C.

[0024] According to the method described above, the steps for preparing the coated modified functional particles corresponding to the anti-ultraviolet and anti-yellowing polyester fibers are as follows:

[0025] (a) using a coupling agent to organically modify the functional particles to obtain coupling agent-modified functional particles;

[0026] The coupling agent is one or more of γ-aminopropyl triethoxysilane, γ-(2,3-epoxypropoxy)propyl trimethoxysilane, γ-methacryloxypropyl trimethoxysilane, N-(β-aminoethyl)-γ-aminopropyl trimethoxy(ethyl)silane, n-octyl triethoxysilane, vinyl triethoxysilane, isopropyl triisostearate titanate, isopropoxy tris(dioctyl pyrophosphate acyloxy) titanate, tridecafluorooctyl trimethoxysilane, and perfluorodecyl trimethoxysilane;

[0027] The mass of the coupling agent is 3-5% of the mass of the functional particles;

[0028] The organic modification is completed in a high-speed blender at a speed of 2500-3000 r / min, a temperature of 80-100°C, and a time of 2-3 h;

[0029] Since the coupling agent has an amino functional group, it is beneficial for the outer side of the coupling agent-modified functional particles to have an amino group;

[0030] (b) Adding the dibasic acid and diol into a reaction kettle, stirring and heating to 200-230°C, controlling the pressure of the reaction system to be 0.2-0.3MPa, adding a catalyst after reacting for 3-5h, controlling the temperature of the reaction system to gradually rise to 260-270°C, evacuating to a vacuum degree of less than 80Pa, reacting for 2-3h and cooling to 230°C to obtain an oligomer whose terminal group is a carboxyl group;

[0031] The dibasic acid is terephthalic acid; the diol is one or more of ethylene glycol, propylene glycol and butanediol; the catalyst is ethylene glycol antimony or tetrabutyl titanate; the molar ratio of the dibasic acid to the diol is 1:0.9-0.95; the mass of the catalyst is 0.01-0.1% of the mass of the dibasic acid;

[0032] (c) adding the coupling agent modified functional particles to the reaction system of step (b), stirring at high speed to fully mix, keeping the temperature for reaction for 0.5 to 1 hour, the amino groups on the outer sides of the coupling agent modified functional particles react with the terminal carboxyl groups of the oligomers, so that the oligomers are coated on the surface of the functional particles in the form of covalent bonds, and continuously vacuuming, discharging, cooling, pre-crushing, and airflow crushing to obtain coated modified functional particles;

[0033] The mass ratio of the coupling agent modified functional particles to the oligomers is 5~8:1.

[0034] According to the method described above, the steps for preparing the coated modified functional particles corresponding to the modified nylon 6 fiber are as follows:

[0035] (I) using a coupling agent to organically modify the functional particles to obtain coupling agent-modified functional particles;

[0036] The coupling agent is one or more of γ-aminopropyl triethoxysilane, γ-(2,3-epoxypropoxy)propyl trimethoxysilane, γ-methacryloxypropyl trimethoxysilane, N-(β-aminoethyl)-γ-aminopropyl trimethoxy(ethyl)silane, n-octyl triethoxysilane, vinyl triethoxysilane, isopropyl triisostearate titanate, isopropoxy tris(dioctyl pyrophosphate acyloxy) titanate, tridecafluorooctyl trimethoxysilane, and perfluorodecyl trimethoxysilane;

[0037] The mass of the coupling agent is 3-5% of the mass of the functional particles;

[0038] The organic modification is completed in a high-speed blender at a speed of 2500-3000 r / min, a temperature of 80-100°C, and a time of 2-3 h;

[0039] Since the coupling agent has an amino functional group, it is beneficial for the outer side of the coupling agent-modified functional particles to have an amino group;

[0040] (II) Add dibasic acid, diamine and deionized water into a reactor, replace the air in the reactor with nitrogen or inert gas (i.e., introduce 0.3-0.6MPa of nitrogen or inert gas into the reactor, open the exhaust valve to discharge, and repeat 3 times), react at 250°C and 1.3-1.8MPa for 3h, then reduce the pressure to 0.1MPa, add a catalyst, raise the temperature to 260°C, and turn on the vacuum pump to maintain the vacuum degree below 80Pa, react for 2-3h, then introduce nitrogen or inert gas to raise the pressure to 0.1MPa, and reduce the temperature to 220°C to obtain an oligomer with a carboxyl terminal group;

[0041] The dibasic acid is one or more of succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, and sebacic acid; the diamine is one or more of pentamethylenediamine and ethylenediamine; the catalyst is tetrabutyl titanate; the molar ratio of the dibasic acid to the diamine is 1:0.9-0.95; the molar ratio of deionized water to the dibasic acid is 0.3-0.4:1; the mass of the catalyst is 0.01-0.1% of the mass of the dibasic acid;

[0042] (III) adding coupling agent modified functional particles to the reaction system of step (II), stirring at high speed to fully mix, keeping the temperature to react for 0.5 to 1 hour, the amino groups on the outer side of the coupling agent modified functional particles react with the terminal carboxyl groups of the oligomers, so that the oligomers are coated on the surface of the functional particles in the form of covalent bonds, and continuously vacuuming, discharging, cooling, pre-crushing, and airflow crushing to obtain coated modified functional particles;

[0043] The mass ratio of the coupling agent modified functional particles to the oligomers is 5~8:1.

[0044] In the method described above, in the preparation process of the spinning melt corresponding to the modified nylon 6 fiber, the concentration of the masterbatch is 50-65wt%, and the solid phase viscosity enhancement is carried out under nitrogen or inert gas atmosphere, at a temperature of 190-210°C, and for 20-30h;

[0045] The preparation process of the spinning melt corresponding to the anti-ultraviolet and anti-yellowing polyester fiber is as follows: firstly, the polyester and the coated modified functional particles are melt-blended to obtain a masterbatch with a concentration of 50-65wt%, and then the masterbatch is melt-blended with the polyester to obtain a spinning melt;

[0046] Four pairs of drafting rollers are used for drafting; the temperature of the first pair of drafting rollers is 100~120℃, the temperature of the second pair of drafting rollers is 130~150℃, the temperature of the third pair of drafting rollers is 180~200℃, and the temperature of the fourth pair of drafting rollers is 200~240℃; the spinning speed of the first pair of drafting rollers is 400~500m / min, the spinning speed of the second pair of drafting rollers is 1200~1500m / min, the spinning speed of the third pair of drafting rollers is 2400~2600m / min, and the spinning speed of the fourth pair of drafting rollers is 2600~2800m / min;

[0047] Spinning is carried out directly according to the FDY process.

[0048] Beneficial effects:

[0049] (1) The shoe fabric of the present invention has a double-layer structure. Inorganic particles are introduced into the inner layer of nylon 6 fiber and the outer layer of polyester fiber, so that the fiber surface has a large number of protrusions. A large number of grooves are formed between the protrusions on the same fiber surface, which is conducive to the rapid spreading of water on the fiber surface. A large number of capillary-like channels are formed between the protrusions of different fibers, which is conducive to the rapid conduction of water. The grooves and capillary-like channels greatly enhance the capillary effect of the fabric, which is conducive to the rapid discharge of moisture in the shoe, thereby achieving breathable and quick-drying functions.

[0050] (2) In the inner layer of the shoe fabric of the present invention, zinc oxide particles with antibacterial function are exposed on the surface of nylon 6 fiber, thereby reducing the growth of bacteria in the shoe and achieving the antibacterial function.

[0051] (3) In the outer layer of the shoe fabric of the present invention, the interior and surface of the polyester fiber have titanium dioxide particles. These titanium dioxide particles have a strong light scattering ability. In particular, the titanium dioxide particles on the surface of the polyester fiber increase the area of ​​action of light, thereby achieving excellent anti-light aging effect and preventing the upper material from turning yellow due to light aging.

[0052] (4) The preparation method of the present invention adds inorganic functional particles to a polymer matrix, obtains fibers with a special surface structure through a fiber forming process, and then spins them into yarns. After weaving, a double-layer fabric can be obtained. The method is simple, the fiber forming process is suitable for existing melt spinning equipment, and the weaving difficulty is low, which is conducive to large-scale industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic diagram of the breathable and quick-drying shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties according to Example 1 of the present invention;

[0054] Among them, 1-outer layer, 2-inner layer. DETAILED DESCRIPTION

[0055] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0056] The following are the test methods for the relevant performance indicators in each embodiment and comparative example:

[0057] Average degree of polymerization: tested by gel permeation chromatography (GPC).

[0058] Linear density: tested according to GB / T 16256-2008.

[0059] Air permeability index: tested according to GB / T 5453-1997 (Determination of air permeability of textile fabrics).

[0060] Moisture permeability index: Tested according to GB / T 12704 1-2009 (Test method for moisture permeability of textile fabrics-Part 1: Moisture absorption method).

[0061] Antibacterial rate against Candida albicans: tested according to GB / T 20944.3-2008 (Evaluation of antibacterial properties of textiles Part 3: Oscillation method).

[0062] Water absorption: Tested according to 8.1 water absorption test method in GB / T 21655.1-2023.

[0063] Water droplet diffusion time: Tested according to 8.2 Water droplet diffusion time in GB / T 21655.1-2023.

[0064] Wicking height: Tested according to 8.4 Wicking height in GB / T 21655.1-2023.

[0065] Drying rate: Tested according to 8.3 Drying rate in GB / T 21655.1-2023.

[0066] Yellowing resistance grade: tested according to GB / T 30669-2014.

[0067] Example 1

[0068] A method for preparing a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, the specific steps are as follows:

[0069] (1) Preparation of raw materials;

[0070] Coupling agent a, coupling agent b: both are γ-aminopropyltriethoxysilane;

[0071] Functional particle a: titanium dioxide;

[0072] Dibasic acid a: terephthalic acid;

[0073] Diol: ethylene glycol;

[0074] Catalyst a: antimony glycol;

[0075] Functional particle b: zinc oxide;

[0076] Dibasic acid b: succinic acid;

[0077] Diamine: ethylenediamine;

[0078] Deionized water;

[0079] Catalyst b: tetrabutyl titanate;

[0080] Polyester: PET with an average degree of polymerization of 600;

[0081] Nylon 6: average degree of polymerization is 200;

[0082] Alkali solution: composed of NaOH, benzyl alcohol and water, with the concentration of NaOH being 6 g / L and the concentration of benzyl alcohol being 3 mL / L;

[0083] (2) preparing coated modified functional particles a and coated modified functional particles b respectively;

[0084] The preparation process of coated modified functional particles a is as follows:

[0085] (a) In a high-speed blender, at a speed of 3000 r / min and a temperature of 80° C., functional particles a are organically modified with coupling agent a for 2.5 h to obtain coupling agent-modified functional particles a; wherein the mass of coupling agent a is 5% of the mass of functional particles a;

[0086] (b) adding dibasic acid a and diol into a reaction kettle, stirring and heating to 200°C, controlling the pressure of the reaction system to be 0.2MPa, adding catalyst a after reacting for 4 hours, controlling the temperature of the reaction system to gradually rise to 270°C, evacuating to 75Pa, reacting for 2.5 hours and cooling to 230°C to obtain a polyester oligomer with an average degree of polymerization of 40; wherein the molar ratio of dibasic acid a to diol is 1:0.95; and the mass of catalyst a is 0.1% of the mass of dibasic acid a;

[0087] (c) adding coupling agent modified functional particles a to the reaction system of step (b), stirring to fully mix, keeping the temperature for reaction for 0.5h, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles a with a D50 particle size of 200nm; wherein the mass ratio of coupling agent modified functional particles a to polyester oligomer is 5:1;

[0088] The preparation process of the coated modified functional particles b is as follows:

[0089] (I) In a high-speed blender, at a speed of 3000 r / min and a temperature of 80° C., functional particles b are organically modified with coupling agent b for 2.5 h to obtain coupling agent-modified functional particles b; wherein the mass of coupling agent b is 5% of the mass of functional particles b;

[0090] (II) Add dibasic acid b, diamine and deionized water into a reactor, replace the air in the reactor with nitrogen or inert gas (i.e., introduce 0.3 MPa of nitrogen or inert gas into the reactor, open the exhaust valve to discharge, and repeat 3 times), react at 250°C and 1.3 MPa for 3 hours, then reduce the pressure to 0.1 MPa, add catalyst b, raise the temperature to 260°C, turn on the vacuum pump, maintain the vacuum degree at 75 Pa, react for 2 hours, then raise the pressure to 0.1 MPa, and reduce the temperature to 220°C to obtain nylon 6 oligomer with an average degree of polymerization of 20; wherein the molar ratio of dibasic acid b to diamine is 1:0.9, the molar ratio of deionized water to dibasic acid b is 0.3:1, and the mass of catalyst b is 0.06% of the mass of dibasic acid b;

[0091] (III) adding coupling agent modified functional particles b to the reaction system of step (II), stirring to fully mix, keeping the temperature for reaction for 0.5h, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles b with a D50 particle size of 50nm; wherein the mass ratio of coupling agent modified functional particles b to nylon 6 oligomer is 6.5:1;

[0092] (3) preparing spinning melt a and spinning melt b respectively;

[0093] The preparation process of the spinning melt a is as follows: firstly, the polyester and the coated modified functional particles a are melt-blended to obtain a master batch a with a concentration of 65wt%, and then the master batch a is melt-blended with the polyester to obtain a spinning melt a containing 8wt% of the coated modified functional particles a;

[0094] The preparation process of the spinning melt b is as follows: firstly, nylon 6 and the coated modified functional particles b are melt-blended to obtain a master batch b with a concentration of 55wt%, then the master batch b is solid-phase thickened for 30h under the condition of nitrogen or inert gas atmosphere and temperature of 190°C, and then the master batch b after solid-phase thickening is melt-blended with nylon 6 to obtain a spinning melt b containing 9wt% of the coated modified functional particles b;

[0095] (4) preparing UV-resistant and anti-yellowing polyester fibers and antibacterial nylon 6 fibers respectively;

[0096] The preparation process of the anti-ultraviolet and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber is as follows: directly spinning the spinning melt a and the spinning melt b according to the FDY process respectively, and using four pairs of drafting rollers to draft during the spinning process to obtain the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber, placing the modified nylon 6 fiber in an alkali solution (the ratio of the modified nylon 6 fiber to the alkali solution is 1g:50mL), heating to 130°C at a heating rate of 2°C / min, and then keeping the temperature for 40 minutes, and then post-treating to obtain the antibacterial nylon 6 fiber;

[0097] During the preparation of the UV-resistant and yellowing-resistant polyester fiber and the modified nylon 6 fiber, the temperature of the first pair of drafting rollers was 100°C, the temperature of the second pair of drafting rollers was 135°C, the temperature of the third pair of drafting rollers was 180°C, and the temperature of the fourth pair of drafting rollers was 200°C; the spinning speed of the first pair of drafting rollers was 400 m / min, the spinning speed of the second pair of drafting rollers was 1250 m / min, the spinning speed of the third pair of drafting rollers was 2500 m / min, and the spinning speed of the fourth pair of drafting rollers was 2600 m / min;

[0098] The specification of the prepared anti-ultraviolet and anti-yellowing polyester fiber is 150D / 96F, and the monofilament of the anti-ultraviolet and anti-yellowing polyester fiber has a convex rough surface, with one convexity every 0.5-2 μm, and the average distance between two adjacent convexities is 1.8 μm; the specification of the prepared antibacterial nylon 6 fiber is 20D / 36F, and the antibacterial nylon 6 fiber has a convex rough surface, with one convexity every 0.5-2 μm, and the average distance between two adjacent convexities is 1.6 μm;

[0099] (5) Preparation of shoe fabrics with breathable, antibacterial, moisture-absorbing and quick-drying properties;

[0100] (5.1) spinning the anti-ultraviolet and anti-yellowing polyester fiber into an anti-ultraviolet and anti-yellowing polyester yarn with a linear density of 1.56 dtex, and spinning the antibacterial nylon 6 fiber into an antibacterial nylon 6 yarn with a linear density of 0.56 dtex;

[0101] (5.2) First, an outer layer of fabric is knitted on a loom using anti-ultraviolet and anti-yellowing polyester yarn, and then, on the basis of the outer layer of fabric, an inner layer of fabric is knitted using antibacterial nylon 6 yarn. The two layers of fabric are tightly combined together using a knitting method, and then pre-setting, double-sided singeing, washing and drying, setting, and post-treatment are performed in sequence to obtain a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties; wherein, the pre-setting temperature is 130°C and the setting temperature is 150°C.

[0102] like Figure 1 As shown, the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties finally prepared consists of an inner layer 1 and an outer layer 2, the outer layer 2 is an anti-light aging quick-drying layer made of anti-ultraviolet and anti-yellowing polyester yarn, the inner layer 1 is an antibacterial moisture-conducting layer made of antibacterial nylon 6 yarn, the outer layer 2 is a plain woven structure, and the inner layer 1 is a double rib structure; the air permeability index of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is 2350mm / s, and the moisture permeability index is 3460g / m 2 / 24h, the antibacterial rate against Candida albicans is 99.2%, the water absorption rate is 155%, the water droplet diffusion time is 1.8s, the wicking height is 112mm, the drying rate is 0.42g / h, and the yellowing resistance grade is 4.

[0103] Comparative Example 1

[0104] A method for preparing a shoe fabric is basically the same as that of Example 1, except that in step (III), the D50 particle size of the coated modified functional particles b is 40 nm.

[0105] The air permeability index of the final shoe fabric is 1460mm / s and the moisture permeability index is 1980g / m 2 / 24h, the antibacterial rate against Candida albicans is 89.1%, the water absorption rate is 127%, the water droplet diffusion time is 3.5s, the wicking height is 86mm, and the drying rate is 0.26g / h.

[0106] Compared with Example 1, the air permeability, antibacterial, moisture absorption and quick-drying properties of the shoe fabric in Comparative Example 1 are significantly worse. This is because the D50 particle size of the coated modified functional particles b is too small, which makes it difficult to form a sufficient number of dense protrusion structures on the surface of the antibacterial nylon 6 fiber, thereby causing the following problems:

[0107] ① It is difficult to form enough and effective grooves between different antibacterial nylon 6 fibers, and a large number of capillary channels that are conducive to the rapid conduction of water are also constructed, which weakens the capillary effect on the fiber surface, thereby affecting the rapid spreading and conduction of water on the fiber surface, making the fabric's air permeability, moisture absorption, and quick-drying performance worse;

[0108] ② There are not enough exposed zinc oxide particles on the surface of antibacterial nylon 6 fiber, which makes the contact effect between the fiber surface and bacteria worse, making it difficult to fully exert the antibacterial effect, resulting in a decrease in the antibacterial rate against Candida albicans.

[0109] Comparative Example 2

[0110] A method for preparing a shoe fabric is basically the same as that in Example 1, except that in step (3), the content of the coated modified functional particles a in the spinning melt a is 6 wt %.

[0111] The air permeability index of the final shoe fabric is 1980mm / s and the moisture permeability index is 2420g / m 2 / 24h, water absorption rate is 134%, water droplet diffusion time is 2.2s, wicking height is 102mm, drying rate is 0.28g / h, and yellowing resistance grade is 3.

[0112] Compared with Example 1, the air permeability, moisture absorption, quick-drying and light aging resistance of the shoe fabric in Comparative Example 2 are significantly deteriorated. This is because the content of the coated modified functional particles a in the spinning melt a is too low, which reduces the number of raised structures formed on the surface of the anti-ultraviolet and anti-yellowing polyester fibers and makes their distribution less dense, affecting the air permeability, moisture absorption and quick-drying properties of the shoe fabric. At the same time, the outer layer of the shoe fabric is made of anti-ultraviolet and anti-yellowing polyester fibers, and the number of raised structures on the surface of the anti-ultraviolet and anti-yellowing polyester fibers is reduced, which affects the scattering ability and effective area of ​​light, making it difficult to exert excellent light aging resistance, so the yellowing resistance grade is reduced.

[0113] Example 2

[0114] A method for preparing a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, the specific steps are as follows:

[0115] (1) Preparation of raw materials;

[0116] Coupling agent a: N-(β-aminoethyl)-γ-aminopropyltrimethyl(ethyl)oxysilane;

[0117] Functional particle a: titanium dioxide;

[0118] Dibasic acid a: terephthalic acid;

[0119] Diol: ethylene glycol;

[0120] Catalyst a: antimony glycol;

[0121] Coupling agent b: γ-(2,3-epoxypropoxy)propyltrimethoxysilane;

[0122] Functional particle b: zinc oxide;

[0123] Dibasic acid b: glutaric acid;

[0124] Diamine: ethylenediamine;

[0125] Deionized water;

[0126] Catalyst b: tetrabutyl titanate;

[0127] Polyester: PET with an average degree of polymerization of 600;

[0128] Nylon 6: average degree of polymerization is 200;

[0129] Alkali solution: composed of NaOH, benzyl alcohol and water, with the concentration of NaOH being 6 g / L and the concentration of benzyl alcohol being 3 mL / L;

[0130] (2) preparing coated modified functional particles a and coated modified functional particles b respectively;

[0131] The preparation process of coated modified functional particles a is as follows:

[0132] (a) In a high-speed blender, at a speed of 2800 r / min and a temperature of 100° C., coupling agent a is used to organically modify functional particles a for 2.8 h to obtain coupling agent-modified functional particles a; wherein the mass of coupling agent a is 3% of the mass of functional particles a;

[0133] (b) adding dibasic acid a and diol into a reaction kettle, stirring and heating to 200°C, controlling the pressure of the reaction system to be 0.2MPa, adding catalyst a after reacting for 3.5h, controlling the temperature of the reaction system to gradually rise to 265°C, evacuating to 78Pa, reacting for 2.5h and cooling to 230°C to obtain a polyester oligomer with an average degree of polymerization of 45; wherein the molar ratio of dibasic acid a to diol is 1:0.92; and the mass of catalyst a is 0.04% of the mass of dibasic acid a;

[0134] (c) adding coupling agent modified functional particles a to the reaction system of step (b), stirring to fully mix, keeping the temperature for reaction for 0.7h, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles a with a D50 particle size of 300nm; wherein the mass ratio of coupling agent modified functional particles a to polyester oligomer is 8:1;

[0135] The preparation process of the coated modified functional particles b is as follows:

[0136] (I) In a high-speed blender, at a speed of 2800 r / min and a temperature of 100° C., functional particles b are organically modified with coupling agent b for 2.8 h to obtain coupling agent-modified functional particles b; wherein the mass of coupling agent b is 3% of the mass of functional particles b;

[0137] (II) Adding dibasic acid b, diamine and deionized water into a reactor, replacing the air in the reactor with nitrogen or inert gas (i.e., introducing 0.45 MPa of nitrogen or inert gas into the reactor, opening the exhaust valve to discharge, and repeating 3 times), reacting at 250°C and 1.5 MPa for 3 hours, then reducing the pressure to 0.1 MPa, adding catalyst b, raising the temperature to 260°C, and turning on the vacuum pump to maintain the vacuum degree at 78 Pa, reacting for 3 hours, then raising the pressure to 0.1 MPa, and reducing the temperature to 220°C to obtain nylon 6 oligomers with an average degree of polymerization of 25; wherein the molar ratio of dibasic acid b to diamine is 1:0.93, the molar ratio of deionized water to dibasic acid b is 0.33:1, and the mass of catalyst b is 0.01% of the mass of dibasic acid b;

[0138] (III) adding coupling agent modified functional particles b to the reaction system of step (II), stirring to fully mix, keeping the temperature for reaction for 1 hour, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles b with a D50 particle size of 150 nm; wherein the mass ratio of coupling agent modified functional particles b to nylon 6 oligomer is 5:1;

[0139] (3) preparing spinning melt a and spinning melt b respectively;

[0140] The preparation process of the spinning melt a is as follows: firstly, the polyester and the coated modified functional particles a are melt-blended to obtain a master batch a with a concentration of 55 wt%, and then the master batch a is melt-blended with the polyester to obtain a spinning melt a containing 9.5 wt% of the coated modified functional particles a;

[0141] The preparation process of the spinning melt b is as follows: firstly, nylon 6 and the coated modified functional particles b are melt-blended to obtain a master batch b with a concentration of 50wt%, then the master batch b is solid-phase thickened for 28h under the condition of nitrogen or inert gas atmosphere and temperature of 195°C, and then the master batch b after solid-phase thickening is melt-blended with nylon 6 to obtain a spinning melt b containing 12wt% of the coated modified functional particles b;

[0142] (4) preparing UV-resistant and anti-yellowing polyester fibers and antibacterial nylon 6 fibers respectively;

[0143] The preparation process of the anti-ultraviolet and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber is as follows: directly spinning the spinning melt a and the spinning melt b according to the FDY process respectively, and using four pairs of drafting rollers to draft during the spinning process to obtain the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber, placing the modified nylon 6 fiber in an alkali solution (the ratio of the modified nylon 6 fiber to the alkali solution is 1g:50mL), heating to 130°C at a heating rate of 2°C / min, and then keeping the temperature for 40 minutes, and then post-treating to obtain the antibacterial nylon 6 fiber;

[0144] During the preparation of the UV-resistant and yellowing-resistant polyester fiber and the modified nylon 6 fiber, the temperature of the first pair of drafting rollers was 100°C, the temperature of the second pair of drafting rollers was 130°C, the temperature of the third pair of drafting rollers was 180°C, and the temperature of the fourth pair of drafting rollers was 210°C; the spinning speed of the first pair of drafting rollers was 400 m / min, the spinning speed of the second pair of drafting rollers was 1200 m / min, the spinning speed of the third pair of drafting rollers was 2400 m / min, and the spinning speed of the fourth pair of drafting rollers was 2600 m / min;

[0145] The specification of the prepared anti-ultraviolet and anti-yellowing polyester fiber is 200D / 96F, and the monofilament of the anti-ultraviolet and anti-yellowing polyester fiber has a convex rough surface, with one convexity every 0.5-2μm, and the average distance between two adjacent convexities is 0.8μm; the specification of the prepared antibacterial nylon 6 fiber is 150D / 144F, and the antibacterial nylon 6 fiber has a convex rough surface, with one convexity every 0.5-2μm, and the average distance between two adjacent convexities is 1.8μm;

[0146] (5) Preparation of shoe fabrics with breathable, antibacterial, moisture-absorbing and quick-drying properties;

[0147] (5.1) spinning the anti-ultraviolet and anti-yellowing polyester fiber into an anti-ultraviolet and anti-yellowing polyester yarn with a linear density of 2.08 dtex, and spinning the antibacterial nylon 6 fiber into an antibacterial nylon 6 yarn with a linear density of 1.04 dtex;

[0148] (5.2) First, an outer layer of fabric is knitted on a loom using anti-ultraviolet and anti-yellowing polyester yarn, and then, on the basis of the outer layer of fabric, an inner layer of fabric is knitted using antibacterial nylon 6 yarn. The two layers of fabric are tightly combined together using a knitting method, and then pre-setting, double-sided singeing, washing and drying, setting, and post-treatment are performed in sequence to obtain a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties; wherein, the pre-setting temperature is 120°C and the setting temperature is 135°C.

[0149] The outer layer of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is a plain woven structure, and the inner layer is a double rib structure; the air permeability index of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is 2865 mm / s, and the moisture permeability index is 3805 g / m2 / 24h, the antibacterial rate against Candida albicans is 99.4%, the water absorption rate is 162%, the water droplet diffusion time is 1.2s, the wicking height is 120mm, the drying rate is 0.5g / h, and the yellowing resistance grade is 4~5.

[0150] Example 3

[0151] A method for preparing a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, the specific steps are as follows:

[0152] (1) Preparation of raw materials;

[0153] Coupling agent a: vinyltriethoxysilane;

[0154] Functional particle a: titanium dioxide;

[0155] Dibasic acid a: terephthalic acid;

[0156] Diol: Propylene glycol;

[0157] Catalyst a: antimony glycol;

[0158] Coupling agent b: N-(β-aminoethyl)-γ-aminopropyltrimethyl(ethyl)oxysilane;

[0159] Functional particle b: zinc oxide;

[0160] Dibasic acid b: adipic acid;

[0161] Diamine: ethylenediamine;

[0162] Deionized water;

[0163] Catalyst b: tetrabutyl titanate;

[0164] Polyester: PET with an average degree of polymerization of 720;

[0165] Nylon 6: average degree of polymerization is 150;

[0166] Alkali solution: composed of NaOH, benzyl alcohol and water, with the concentration of NaOH being 6 g / L and the concentration of benzyl alcohol being 3 mL / L;

[0167] (2) preparing coated modified functional particles a and coated modified functional particles b respectively;

[0168] The preparation process of coated modified functional particles a is as follows:

[0169] (a) In a high-speed blender, at a speed of 3000 r / min and a temperature of 100° C., functional particles a are organically modified with coupling agent a for 2 h to obtain coupling agent-modified functional particles a; wherein the mass of coupling agent a is 3.5% of the mass of functional particles a;

[0170] (b) adding dibasic acid a and diol into a reaction kettle, stirring and heating to 210°C, controlling the pressure of the reaction system to be 0.23MPa, adding catalyst a after reacting for 3h, controlling the temperature of the reaction system to gradually rise to 268°C, evacuating to 70Pa, reacting for 2h and cooling to 230°C to obtain a polyester oligomer with an average degree of polymerization of 60; wherein the molar ratio of dibasic acid a to diol is 1:0.9; and the mass of catalyst a is 0.01% of the mass of dibasic acid a;

[0171] (c) adding coupling agent modified functional particles a to the reaction system of step (b), stirring to fully mix, keeping the temperature for reaction for 1 hour, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles a with a D50 particle size of 250 nm; wherein the mass ratio of coupling agent modified functional particles a to polyester oligomer is 7:1;

[0172] The preparation process of the coated modified functional particles b is as follows:

[0173] (I) In a high-speed blender, at a speed of 3000 r / min and a temperature of 100° C., functional particles b are organically modified with coupling agent b for 2 h to obtain coupling agent-modified functional particles b; wherein the mass of coupling agent b is 3.5% of the mass of functional particles b;

[0174] (II) Add dibasic acid b, diamine and deionized water into a reactor, replace the air in the reactor with nitrogen or inert gas (i.e., introduce 0.5 MPa of nitrogen or inert gas into the reactor, open the exhaust valve to discharge, and repeat 3 times), react at 250°C and 1.65 MPa for 3 hours, then reduce the pressure to 0.1 MPa, add catalyst b, raise the temperature to 260°C, turn on the vacuum pump, maintain the vacuum degree at 66 Pa, react for 2.5 hours, then raise the pressure to 0.1 MPa, and reduce the temperature to 220°C to obtain nylon 6 oligomer with an average degree of polymerization of 23; wherein the molar ratio of dibasic acid b to diamine is 1:0.9, the molar ratio of deionized water to dibasic acid b is 0.4:1, and the mass of catalyst b is 0.03% of the mass of dibasic acid b;

[0175] (III) adding coupling agent modified functional particles b to the reaction system of step (II), stirring to fully mix, keeping the temperature for reaction for 0.8h, continuously evacuating, discharging, cooling, pre-crushing, air flow crushing, and obtaining coated modified functional particles b with a D50 particle size of 300nm; wherein the mass ratio of coupling agent modified functional particles b to nylon 6 oligomer is 6:1;

[0176] (3) preparing spinning melt a and spinning melt b respectively;

[0177] The preparation process of the spinning melt a is as follows: firstly, the polyester and the coated modified functional particles a are melt-blended to obtain a master batch a with a concentration of 50 wt%, and then the master batch a is melt-blended with the polyester to obtain a spinning melt a containing 12 wt% of the coated modified functional particles a;

[0178] The preparation process of the spinning melt b is as follows: firstly, nylon 6 and the coated modified functional particles b are melt-blended to obtain a master batch b with a concentration of 65wt%, then the master batch b is solid-phase thickened for 26h under the condition of nitrogen or inert gas atmosphere and temperature of 200°C, and then the master batch b after solid-phase thickening is melt-blended with nylon 6 to obtain a spinning melt b containing 8wt% of the coated modified functional particles b;

[0179] (4) preparing UV-resistant and anti-yellowing polyester fibers and antibacterial nylon 6 fibers respectively;

[0180] The preparation process of the anti-ultraviolet and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber is as follows: directly spinning the spinning melt a and the spinning melt b according to the FDY process respectively, and using four pairs of drafting rollers to draft during the spinning process to obtain the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber, placing the modified nylon 6 fiber in an alkali solution (the ratio of the modified nylon 6 fiber to the alkali solution is 1g:50mL), heating to 130°C at a heating rate of 2°C / min, and then keeping the temperature for 40 minutes, and then post-treating to obtain the antibacterial nylon 6 fiber;

[0181] During the preparation of the UV-resistant and yellowing-resistant polyester fiber and the modified nylon 6 fiber, the temperature of the first pair of drafting rollers was 120°C, the temperature of the second pair of drafting rollers was 150°C, the temperature of the third pair of drafting rollers was 200°C, and the temperature of the fourth pair of drafting rollers was 240°C; the spinning speed of the first pair of drafting rollers was 430 m / min, the spinning speed of the second pair of drafting rollers was 1300 m / min, the spinning speed of the third pair of drafting rollers was 2500 m / min, and the spinning speed of the fourth pair of drafting rollers was 2800 m / min;

[0182] The specification of the prepared anti-ultraviolet and anti-yellowing polyester fiber is 150D / 144F, and the monofilament of the anti-ultraviolet and anti-yellowing polyester fiber has a convex rough surface, with one convexity every 0.5-2 μm, and the average distance between two adjacent convexities is 1 μm; the specification of the prepared antibacterial nylon 6 fiber is 100D / 144F, and the antibacterial nylon 6 fiber has a convex rough surface, with one convexity every 0.5-2 μm, and the average distance between two adjacent convexities is 0.8 μm;

[0183] (5) Preparation of shoe fabrics with breathable, antibacterial, moisture-absorbing and quick-drying properties;

[0184] (5.1) spinning the anti-ultraviolet and anti-yellowing polyester fiber into an anti-ultraviolet and anti-yellowing polyester yarn with a linear density of 1.04 dtex, and spinning the antibacterial nylon 6 fiber into an antibacterial nylon 6 yarn with a linear density of 0.69 dtex;

[0185] (5.2) First, an outer layer of fabric is knitted on a loom using anti-ultraviolet and anti-yellowing polyester yarn, and then, on the basis of the outer layer of fabric, an inner layer of fabric is knitted using antibacterial nylon 6 yarn. At the same time, the two layers of fabric are tightly combined together using a knitting method, and then pre-setting, double-sided singeing, washing and drying, setting, and post-treatment are carried out in sequence to obtain a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties; wherein, the pre-setting temperature is 135°C and the setting temperature is 160°C.

[0186] The outer layer of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is a plain woven structure, and the inner layer is a double rib structure; the air permeability index of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is 2632 mm / s, and the moisture permeability index is 3637 g / m 2 / 24h, the antibacterial rate against Candida albicans is 99.5%, the water absorption rate is 157%, the water droplet diffusion time is 1.4s, the wicking height is 115mm, the drying rate is 0.46g / h, and the yellowing resistance grade is 4~5.

[0187] Comparative Example 3

[0188] A method for preparing a shoe fabric is basically the same as that in Example 3, except that in step (3), the content of the coated modified functional particles b in the spinning melt b is 6 wt %.

[0189] The air permeability index of the final shoe fabric is 1935mm / s and the moisture permeability index is 2390g / m 2 / 24h, the antibacterial rate against Candida albicans is 78.2%, the water absorption rate is 129%, the water droplet diffusion time is 2.6s, the wicking height is 95mm, and the drying rate is 0.26g / h.

[0190] Compared with Example 3, the air permeability, moisture absorption, antibacterial and quick-drying properties of the shoe fabric in Comparative Example 3 are significantly deteriorated. This is because the content of the coated modified functional particles b in the spinning melt b is too low, which reduces the number of raised structures formed on the surface of the antibacterial nylon 6 fiber and makes their distribution less dense, which affects the air permeability, moisture absorption, antibacterial and quick-drying properties of the shoe fabric.

[0191] Example 4

[0192] A method for preparing a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, the specific steps are as follows:

[0193] (1) Preparation of raw materials;

[0194] Coupling agent a: isopropoxy tris(dioctyl pyrophosphate) titanate;

[0195] Functional particle a: titanium dioxide;

[0196] Dibasic acid a: terephthalic acid;

[0197] Diol: Butanediol;

[0198] Catalyst a, catalyst b: both are tetrabutyl titanate;

[0199] Coupling agent b: isopropyl triisostearate titanate;

[0200] Functional particle b: zinc oxide;

[0201] Dibasic acid b: suberic acid;

[0202] Diamine: pentamethylenediamine;

[0203] Deionized water;

[0204] Polyester: PET with an average degree of polymerization of 720;

[0205] Nylon 6: average degree of polymerization is 150;

[0206] Alkali solution: composed of NaOH, benzyl alcohol and water, with the concentration of NaOH being 6 g / L and the concentration of benzyl alcohol being 3 mL / L;

[0207] (2) preparing coated modified functional particles a and coated modified functional particles b respectively;

[0208] The preparation process of coated modified functional particles a is as follows:

[0209] (a) In a high-speed blender, at a speed of 2500 r / min and a temperature of 90° C., functional particles a are organically modified with coupling agent a for 3 h to obtain coupling agent-modified functional particles a; wherein the mass of coupling agent a is 4.5% of the mass of functional particles a;

[0210] (b) adding dibasic acid a and diol into a reaction kettle, stirring and heating to 230°C, controlling the pressure of the reaction system to be 0.3MPa, adding catalyst a after reacting for 5h, controlling the temperature of the reaction system to gradually rise to 270°C, evacuating to 65Pa, reacting for 3h and cooling to 230°C to obtain a polyester oligomer with an average degree of polymerization of 55; wherein the molar ratio of dibasic acid a to diol is 1:0.92; and the mass of catalyst a is 0.1% of the mass of dibasic acid a;

[0211] (c) adding coupling agent modified functional particles a to the reaction system of step (b), stirring to fully mix, keeping the temperature for reaction for 0.8h, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles a with a D50 particle size of 100nm; wherein the mass ratio of coupling agent modified functional particles a to polyester oligomer is 6:1;

[0212] The preparation process of the coated modified functional particles b is as follows:

[0213] (I) In a high-speed blender, at a speed of 2500 r / min and a temperature of 90° C., functional particles b are organically modified with coupling agent b for 3 h to obtain coupling agent-modified functional particles b; wherein the mass of coupling agent b is 4.5% of the mass of functional particles b;

[0214] (II) Add dibasic acid b, diamine and deionized water into a reactor, replace the air in the reactor with nitrogen or inert gas (i.e., introduce 0.6 MPa of nitrogen or inert gas into the reactor, open the exhaust valve to discharge, and repeat 3 times), react at 250°C and 1.8 MPa for 3 hours, then reduce the pressure to 0.1 MPa, add catalyst b, increase the temperature to 260°C, turn on the vacuum pump, maintain the vacuum degree at 72 Pa, react for 3 hours, then increase the pressure to 0.1 MPa, and reduce the temperature to 220°C to obtain nylon 6 oligomer with an average degree of polymerization of 28; wherein the molar ratio of dibasic acid b to diamine is 1:0.95, the molar ratio of deionized water to dibasic acid b is 0.35:1, and the mass of catalyst b is 0.1% of the mass of dibasic acid b;

[0215] (III) adding coupling agent modified functional particles b to the reaction system of step (II), stirring to fully mix, keeping the temperature for reaction for 0.6h, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles b with a D50 particle size of 220nm; wherein the mass ratio of coupling agent modified functional particles b to nylon 6 oligomer is 7:1;

[0216] (3) preparing spinning melt a and spinning melt b respectively;

[0217] The preparation process of the spinning melt a is as follows: firstly, the polyester and the coated modified functional particles a are melt-blended to obtain a master batch a with a concentration of 65wt%, and then the master batch a is melt-blended with the polyester to obtain a spinning melt a containing 12wt% of the coated modified functional particles a;

[0218] The preparation process of the spinning melt b is as follows: firstly, nylon 6 and the coated modified functional particles b are melt-blended to obtain a master batch b with a concentration of 60wt%, then the master batch b is solid-phase thickened for 24h under the condition of nitrogen or inert gas atmosphere and temperature of 205°C, and then the master batch b after solid-phase thickening is melt-blended with nylon 6 to obtain a spinning melt b containing 15wt% of the coated modified functional particles b;

[0219] (4) preparing UV-resistant and anti-yellowing polyester fibers and antibacterial nylon 6 fibers respectively;

[0220] The preparation process of the anti-ultraviolet and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber is as follows: directly spinning the spinning melt a and the spinning melt b according to the FDY process respectively, and using four pairs of drafting rollers to draft during the spinning process to obtain the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber, placing the modified nylon 6 fiber in an alkali solution (the ratio of the modified nylon 6 fiber to the alkali solution is 1g:50mL), heating to 130°C at a heating rate of 2°C / min, and then keeping the temperature for 40 minutes, and then post-treating to obtain the antibacterial nylon 6 fiber;

[0221] During the preparation of the UV-resistant and yellowing-resistant polyester fiber and the modified nylon 6 fiber, the temperature of the first pair of drafting rollers was 105°C, the temperature of the second pair of drafting rollers was 135°C, the temperature of the third pair of drafting rollers was 190°C, and the temperature of the fourth pair of drafting rollers was 220°C; the spinning speed of the first pair of drafting rollers was 450 m / min, the spinning speed of the second pair of drafting rollers was 1200 m / min, the spinning speed of the third pair of drafting rollers was 2400 m / min, and the spinning speed of the fourth pair of drafting rollers was 2650 m / min;

[0222] The specification of the prepared anti-ultraviolet and anti-yellowing polyester fiber is 300D / 288F, and the monofilament of the anti-ultraviolet and anti-yellowing polyester fiber has a convex rough surface, with one convexity every 0.5-2μm, and the average distance between two adjacent convexities is 0.6μm; the specification of the prepared antibacterial nylon 6 fiber is 150D / 288F, and the antibacterial nylon 6 fiber has a convex rough surface, with one convexity every 0.5-2μm, and the average distance between two adjacent convexities is 0.6μm;

[0223] (5) Preparation of shoe fabrics with breathable, antibacterial, moisture-absorbing and quick-drying properties;

[0224] (5.1) spinning the anti-ultraviolet and anti-yellowing polyester fiber into an anti-ultraviolet and anti-yellowing polyester yarn with a linear density of 1.04 dtex, and spinning the antibacterial nylon 6 fiber into an antibacterial nylon 6 yarn with a linear density of 0.52 dtex;

[0225] (5.2) First, an outer layer of fabric is knitted on a loom using anti-ultraviolet and anti-yellowing polyester yarn, and then, on the basis of the outer layer of fabric, an inner layer of fabric is knitted using antibacterial nylon 6 yarn. The two layers of fabric are tightly combined together using a knitting method, and then pre-setting, double-sided singeing, washing and drying, setting, and post-treatment are performed in sequence to obtain a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties; wherein, the pre-setting temperature is 120°C and the setting temperature is 150°C.

[0226] The outer layer of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is a plain woven structure, and the inner layer is a double rib structure; the air permeability index of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is 2280 mm / s, and the moisture permeability index is 3288 g / m 2 / 24h, the antibacterial rate against Candida albicans is 99.9%, the water absorption rate is 151%, the water droplet diffusion time is 1.4s, the wicking height is 116mm, the drying rate is 0.47g / h, and the yellowing resistance grade is 5.

[0227] Example 5

[0228] A method for preparing a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, the specific steps are as follows:

[0229] (1) Preparation of raw materials;

[0230] Coupling agent a: perfluorodecyltrimethoxysilane;

[0231] Functional particle a: titanium dioxide;

[0232] Dibasic acid a: terephthalic acid;

[0233] Diol: Butanediol;

[0234] Catalyst a, catalyst b: both are tetrabutyl titanate;

[0235] Coupling agent b: tridecafluorooctyltrimethoxysilane;

[0236] Functional particle b: zinc oxide;

[0237] Dibasic acid b: sebacic acid;

[0238] Diamine: pentamethylenediamine;

[0239] Deionized water;

[0240] Polyester: PET with an average degree of polymerization of 720;

[0241] Nylon 6: average degree of polymerization is 200;

[0242] Alkali solution: composed of NaOH, benzyl alcohol and water, with the concentration of NaOH being 6 g / L and the concentration of benzyl alcohol being 3 mL / L;

[0243] (2) preparing coated modified functional particles a and coated modified functional particles b respectively;

[0244] The preparation process of coated modified functional particles a is as follows:

[0245] (a) In a high-speed blender, at a speed of 2800 r / min and a temperature of 90° C., functional particles a are organically modified with coupling agent a for 2.5 h to obtain coupling agent-modified functional particles a; wherein the mass of coupling agent a is 4% of the mass of functional particles a;

[0246] (b) adding dibasic acid a and diol into a reaction kettle, stirring and heating to 200°C, controlling the pressure of the reaction system to be 0.28MPa, adding catalyst a after reacting for 4h, controlling the temperature of the reaction system to gradually rise to 260°C, evacuating to 75Pa, reacting for 2.8h and cooling to 230°C to obtain a polyester oligomer with an average degree of polymerization of 60; wherein the molar ratio of dibasic acid a to diol is 1:0.95; and the mass of catalyst a is 0.08% of the mass of dibasic acid a;

[0247] (c) adding coupling agent modified functional particles a to the reaction system of step (b), stirring to fully mix, keeping the temperature for reaction for 0.5h, continuously evacuating, discharging, cooling, pre-crushing, and airflow crushing to obtain coated modified functional particles a with a D50 particle size of 50nm; wherein the mass ratio of coupling agent modified functional particles a to polyester oligomer is 8:1;

[0248] The preparation process of the coated modified functional particles b is as follows:

[0249] (I) In a high-speed blender, at a speed of 2800 r / min and a temperature of 90° C., functional particles b are organically modified with coupling agent b for 2.5 h to obtain coupling agent-modified functional particles b; wherein the mass of coupling agent b is 4% of the mass of functional particles b;

[0250] (II) Adding dibasic acid b, diamine and deionized water into a reactor, replacing the air in the reactor with nitrogen or inert gas (i.e., introducing 0.6 MPa of nitrogen or inert gas into the reactor, opening the exhaust valve to discharge, and repeating 3 times), reacting at 250°C and 1.8 MPa for 3 hours, then reducing the pressure to 0.1 MPa, adding catalyst b, raising the temperature to 260°C, and turning on the vacuum pump to maintain the vacuum degree at 70 Pa, reacting for 3 hours, then raising the pressure to 0.1 MPa, and reducing the temperature to 220°C to obtain nylon 6 oligomers with an average degree of polymerization of 30; wherein the molar ratio of dibasic acid b to diamine is 1:0.9, the molar ratio of deionized water to dibasic acid b is 0.3:1, and the mass of catalyst b is 0.08% of the mass of dibasic acid b;

[0251] (III) adding coupling agent modified functional particles b to the reaction system of step (II), stirring to fully mix, keeping the temperature for reaction for 1 hour, continuously evacuating, discharging, cooling, pre-crushing, and air flow crushing to obtain coated modified functional particles b with a D50 particle size of 100 nm; wherein the mass ratio of coupling agent modified functional particles b to nylon 6 oligomer is 8:1;

[0252] (3) preparing spinning melt a and spinning melt b respectively;

[0253] The preparation process of the spinning melt a is as follows: firstly, the polyester and the coated modified functional particles a are melt-blended to obtain a master batch a with a concentration of 60 wt%, and then the master batch a is melt-blended with the polyester to obtain a spinning melt a containing 15 wt% of the coated modified functional particles a;

[0254] The preparation process of the spinning melt b is as follows: firstly, nylon 6 and the coated modified functional particles b are melt-blended to obtain a master batch b with a concentration of 60wt%, then the master batch b is solid-phase thickened for 20h under the condition of nitrogen or inert gas atmosphere and temperature of 210°C, and then the master batch b after solid-phase thickening is melt-blended with nylon 6 to obtain a spinning melt b containing 12wt% of the coated modified functional particles b;

[0255] (4) preparing UV-resistant and anti-yellowing polyester fibers and antibacterial nylon 6 fibers respectively;

[0256] The preparation process of the anti-ultraviolet and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber is as follows: directly spinning the spinning melt a and the spinning melt b according to the FDY process respectively, and using four pairs of drafting rollers to draft during the spinning process to obtain the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber, placing the modified nylon 6 fiber in an alkali solution (the ratio of the modified nylon 6 fiber to the alkali solution is 1g:50mL), heating to 130°C at a heating rate of 2°C / min, and then keeping the temperature for 40 minutes, and then post-treating to obtain the antibacterial nylon 6 fiber;

[0257] During the preparation of the UV-resistant and yellowing-resistant polyester fiber and the modified nylon 6 fiber, the temperature of the first pair of drafting rollers was 110°C, the temperature of the second pair of drafting rollers was 145°C, the temperature of the third pair of drafting rollers was 195°C, and the temperature of the fourth pair of drafting rollers was 235°C; the spinning speed of the first pair of drafting rollers was 500 m / min, the spinning speed of the second pair of drafting rollers was 1500 m / min, the spinning speed of the third pair of drafting rollers was 2600 m / min, and the spinning speed of the fourth pair of drafting rollers was 2800 m / min;

[0258] The specification of the prepared anti-ultraviolet and anti-yellowing polyester fiber is 200D / 144F, and the monofilament of the anti-ultraviolet and anti-yellowing polyester fiber has a convex rough surface, with one convexity every 0.5-2 μm, and the average distance between two adjacent convexities is 1.6 μm; the specification of the prepared antibacterial nylon 6 fiber is 75D / 72F, and the antibacterial nylon 6 fiber has a convex rough surface, with one convexity every 0.5-2 μm, and the average distance between two adjacent convexities is 1.3 μm;

[0259] (5) Preparation of shoe fabrics with breathable, antibacterial, moisture-absorbing and quick-drying properties;

[0260] (5.1) spinning the anti-ultraviolet and anti-yellowing polyester fiber into an anti-ultraviolet and anti-yellowing polyester yarn with a linear density of 1.39 dtex, and spinning the antibacterial nylon 6 fiber into an antibacterial nylon 6 yarn with a linear density of 1.04 dtex;

[0261] (5.2) First, an outer layer of fabric is knitted on a loom using anti-ultraviolet and anti-yellowing polyester yarn, and then, on the basis of the outer layer of fabric, an inner layer of fabric is knitted using antibacterial nylon 6 yarn. The two layers of fabric are tightly combined together using a knitting method, and then pre-setting, double-sided singeing, washing and drying, setting, and post-treatment are performed in sequence to obtain a shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties; wherein, the pre-setting temperature is 150°C and the setting temperature is 165°C.

[0262] The outer layer of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is a plain woven structure, and the inner layer is a double rib structure; the air permeability index of the shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties is 2558mm / s, and the moisture permeability index is 3524g / m 2 / 24h, the antibacterial rate against Candida albicans is 99.8%, the water absorption rate is 156%, the water droplet diffusion time is 1.5s, the wicking height is 112mm, the drying rate is 0.43g / h, and the yellowing resistance grade is 4~5.

[0263] Comparative Example 4

[0264] A method for preparing a shoe fabric is basically the same as that of Example 5, except that in step (4), the spinning speed of the fourth pair of drafting rollers is 2600 m / min.

[0265] The air permeability index of the final shoe fabric is 1520mm / s and the moisture permeability index is 2045g / m 2 / 24h, the antibacterial rate against Candida albicans is 83.8%, the water absorption rate is 121%, the water droplet diffusion time is 4.2s, the wicking height is 85mm, the drying rate is 0.22g / h, and the yellowing resistance grade is 3~4.

[0266] Compared with Example 5, the air permeability, moisture absorption, antibacterial, quick-drying and anti-light aging properties of the shoe fabric in Comparative Example 4 are significantly deteriorated. This is because the drafting of the anti-ultraviolet and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber in Comparative Example 4 is insufficient, resulting in a decrease in the number of protrusions formed on the fiber surface and an insufficient distribution, which affects the air permeability, moisture absorption, antibacterial, quick-drying and anti-light aging properties of the shoe fabric.

Claims

1. A shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties, characterized in that: It has a double-layer structure, the outer layer is a light-resistant quick-drying layer made of UV-resistant and anti-yellowing polyester yarn, and the inner layer is an antibacterial moisture-conducting layer made of antibacterial nylon 6 yarn; The anti-ultraviolet and anti-yellowing polyester yarn is spun from the anti-ultraviolet and anti-yellowing polyester fiber, and the antibacterial nylon 6 yarn is spun from the antibacterial nylon 6 fiber, and the antibacterial nylon 6 fiber is made from the modified nylon 6 fiber through alkali etching treatment; The preparation process of the anti-ultraviolet and anti-yellowing polyester fiber and the modified nylon 6 fiber is as follows: spinning a spinning melt containing 8 to 15 wt% of coated modified functional particles, and performing a draft of 5.6 to 6.5 times during the spinning process; the D50 particle size of the coated modified functional particles is 50 to 300 nm; the coated modified functional particles include functional particles and oligomers coated on the surface thereof by covalent bonds, and the oligomers and the matrix of the spinning melt are different only in average polymerization degree; The functional particles corresponding to the anti-ultraviolet and anti-yellowing polyester fibers are titanium dioxide, the matrix of the spinning melt is polyester, and the average polymerization degree of the oligomer is 40 to 60; the preparation steps of the coated modified functional particles corresponding to the anti-ultraviolet and anti-yellowing polyester fibers are as follows: (a) using a coupling agent to organically modify the functional particles to obtain coupling agent-modified functional particles; (b) adding a dibasic acid and a diol into a reaction kettle, stirring and heating to 200-230° C., controlling the pressure of the reaction system to be 0.2-0.3 MPa, adding a catalyst after reacting for 3-5 hours, controlling the temperature of the reaction system to gradually rise to 260-270° C., evacuating to a vacuum degree of less than 80 Pa, reacting for 2-3 hours, and cooling to 230° C. to obtain an oligomer; (c) adding the coupling agent modified functional particles to the reaction system of step (b), stirring to fully mix, keeping the temperature for reaction for 0.5 to 1 hour, continuously evacuating, discharging, cooling, pre-crushing, and airflow crushing to obtain coated modified functional particles; The functional particles corresponding to the modified nylon 6 fiber are zinc oxide, the matrix of the spinning melt is nylon 6, and the average polymerization degree of the oligomer is 20 to 30; the preparation steps of the coated modified functional particles corresponding to the modified nylon 6 fiber are as follows: (I) using a coupling agent to organically modify the functional particles to obtain coupling agent-modified functional particles; (II) Adding a dibasic acid, a diamine and deionized water into a reaction kettle, replacing the air in the reaction kettle with nitrogen or an inert gas, reacting at 250°C and 1.3-1.8 MPa for 3 hours, then reducing the pressure to 0.1 MPa, adding a catalyst, raising the temperature to 260°C, and turning on a vacuum pump to maintain the vacuum degree below 80 Pa, reacting for 2-3 hours, then raising the pressure to 0.1 MPa, and reducing the temperature to 220°C to obtain an oligomer; (III) adding the coupling agent modified functional particles to the reaction system of step (II), stirring to fully mix, keeping the temperature for reaction for 0.5 to 1 hour, continuously evacuating, discharging, cooling, pre-crushing, and airflow crushing to obtain coated modified functional particles; The preparation process of the spinning melt corresponding to the modified nylon 6 fiber is as follows: firstly, nylon 6 and the coated modified functional particles are melt-blended to obtain a masterbatch, then the masterbatch is solid-phase thickened, and then the masterbatch after solid-phase thickening is melt-blended with nylon 6 to obtain a spinning melt; In the anti-UV and anti-yellowing polyester fiber, titanium dioxide is not exposed and protrudes from the surface of the monofilament, so that the monofilament has a convex rough surface, with one protrusion every 0.5 to 2 μm; in the monofilament of the antibacterial nylon 6 fiber, zinc oxide is exposed and protrudes from the surface of the monofilament, so that the monofilament has a convex rough surface, with one protrusion every 0.5 to 2 μm.

2. The shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties according to claim 1, characterized in that: The specifications of the UV-resistant and anti-yellowing polyester fiber and the antibacterial nylon 6 fiber are 150-300D / 96-288F and 20-150D / 36-288F respectively. The linear density of the UV-resistant and anti-yellowing polyester yarn is 1.04-2.08dtex, and the linear density of the antibacterial nylon 6 yarn is 0.52-1.04dtex. The outer layer is a plain woven structure, and the inner layer is a double rib structure.

3. A shoe fabric with breathable, antibacterial, moisture-absorbing and quick-drying properties according to claim 1 or 2, characterized in that: The breathable, antibacterial, moisture-absorbing and quick-drying shoe fabric has a breathability index greater than 2000mm / s and a moisture permeability index greater than 3000g / m 2 / 24h, the antibacterial rate against Candida albicans is greater than 99%, the water absorption rate is ≥150%, the water droplet diffusion time is ≤2s, the wicking height is ≥110mm, the drying rate is ≥0.4g / h, and the yellowing resistance grade is ≥4.

4. A method for preparing a shoe fabric having breathable, antibacterial, moisture-absorbing and quick-drying properties as claimed in any one of claims 1 to 3, characterized in that: Anti-ultraviolet and anti-yellowing polyester fibers and modified nylon 6 fibers are prepared respectively, the modified nylon 6 fibers are subjected to alkali etching treatment to obtain antibacterial nylon 6 fibers, the anti-ultraviolet and anti-yellowing polyester fibers are spun into anti-ultraviolet and anti-yellowing polyester yarns, the antibacterial nylon 6 fibers are spun into antibacterial nylon 6 yarns, the anti-ultraviolet and anti-yellowing polyester yarns are used as outer yarns and the antibacterial nylon 6 yarns are used as inner yarns by knitting, so as to obtain shoe fabrics with breathable, antibacterial, moisture-absorbing and quick-drying properties.

5. The method according to claim 4, characterized in that The process of alkali etching treatment is as follows: placing the modified nylon 6 fiber in an alkali solution, heating it to 130°C at a heating rate of 2°C / min, keeping it warm for 40 minutes, and then performing post-treatment, wherein the ratio of the modified nylon 6 fiber to the alkali solution is 1g:50mL, the alkali solution is composed of NaOH, benzyl alcohol and water, the concentration of NaOH is 6g / L, and the concentration of benzyl alcohol is 3mL / L.

6. The method according to claim 4, characterized in that The weaving process is as follows: first, the outer layer of fabric is weaved with anti-ultraviolet and anti-yellowing polyester yarn on the loom, and then the inner layer of fabric is weaved with antibacterial nylon 6 yarn based on the outer layer of fabric. At the same time, the two layers of fabric are tightly combined together using the knitting method, and then pre-shaped, double-sided singeing, washed and dried, shaped, and post-processed in sequence.

7. The method according to claim 6, characterized in that The pre-setting temperature is 120-150°C; the setting temperature is 135-165°C.

8. The method according to claim 4, characterized in that In the preparation process of the spinning melt corresponding to the modified nylon 6 fiber, the concentration of the masterbatch is 50-65wt%, and the solid phase viscosity enhancement is carried out under nitrogen or inert gas atmosphere, at a temperature of 190-210°C, and for 20-30h; The preparation process of the spinning melt corresponding to the anti-ultraviolet and anti-yellowing polyester fiber is as follows: firstly, the polyester and the coated modified functional particles are melt-blended to obtain a master batch with a concentration of 50 to 65 wt%, and then the master batch is melt-blended with the polyester to obtain a spinning melt; Four pairs of drafting rollers are used for drafting; the temperature of the first pair of drafting rollers is 100-120°C, the temperature of the second pair of drafting rollers is 130-150°C, the temperature of the third pair of drafting rollers is 180-200°C, and the temperature of the fourth pair of drafting rollers is 200-240°C; the spinning speed of the first pair of drafting rollers is 400-500m / min, the spinning speed of the second pair of drafting rollers is 1200-1500m / min, the spinning speed of the third pair of drafting rollers is 2400-2600m / min, and the spinning speed of the fourth pair of drafting rollers is 2600-2800m / min; Spinning is carried out directly according to the FDY process.

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